Just cases where they covered it up by hiding the body and then lying about what happened, or don't hide the body but make up a story about a stranger killing the child or children... Otherwise it would be a very, very long list. And also feel free to add cases where other caregivers such as foster parents, step-parents, partner of a parent, or other close family members killed a child then covered it up.
It's so sad how often this happens

I know a lot of people are very passionate about the Casey Anthony case, but really she didn't do anything new

I've seen it speculated that more people have been hiding the bodies of their murdered children since she was found not guilty, because they think they can get away with it like she did... It would be interesting to see if that's true, or whether people are just more aware of these cases now.
I'm also going to add cases where the parents were named suspects but never charged, etc... I wonder if there's a common difference between cases where the parents were convicted of murder, and cases where they walked. And I'm also going to add parents who were wrongfully convicted - what made people so sure they were guilty when they weren't? And how can we avoid such mistakes in the future?